Doug McCrae said:
But it deviates from the default D&D world as expressed in the core rules and is therefore not as legitimately D&D as one that is.
Please correct me if I'm wrong, but I vaguely recall the subject of magic shops coming up in the 1e
AD&D DMG and their use was discouraged - can someone fact-check that for me?
If that's correct, then legitimacy changes by edition.
Certainly that's true of prestige classes - the 3.0 text about making them campaign-specific with roleplaying requirements for entry was seriously watered down in 3.5, as the popularity of PrCs (and the demands for books containing them) soared.
If I'm understanding you correctly,
Doug McCrae (and please forgive me if I'm not), that would mean a GM who places strict controls on PrC availability through roleplaying requirements isn't playing "legitimate D&D," either.
Personally I don't buy that argument - D&D has been described by its own rulebooks as something intended to be personalized for the twenty-five-plus years I've been playing the game.
I agree with the suggestion that D&D is its own genre at this point - after 30 years and tens of thousands (at least) pages of text, that should be expected. In my view that doesn't mean that it must be played strictly by those genre conventions, however.
As a general rule, magic is not the "technology" of my campaign-settings - it's not a commodity in the traditional sense, something to be bought and sold, because it carries costs that are difficult to repay. I've made house rules that make magic a more dangerous and unpredictable force in the cosmos. For example, magic item creation is much more difficult and demanding - forget losing XP, how 'bout a little permanent ability drain instead? Spell-casting acts like a flare to magically-attuned monsters - cast too many spells and you're likely to bring on some powerful baddies drawn to your "light." The whole purpose of this is to get away from the "genre conventions" regarding magic in D&D, to personalize my campaign and give magic its own flavor specific to the setting.
As far as I understand it, that's still D&D.